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SysCall redirection without modifying the SysCall table

Silvio Cesare
Matrix Zine [1]

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This article describes a technique of redirecting system calls without modifying the sys call table (implemented in Linux). This can be used to evade intrusion detection systems that use the sys call table to register redirected or trojaned system calls. It is however an easy modifcation to make to detect the attack implemented in this article.

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